\[\boxed{\mathbf{774\ (774)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 4\frac{3}{4} = \frac{4 \cdot 4 + 3}{4} = \frac{19}{4}\]
\[2)\ 9\frac{6}{11} = \frac{6 \cdot 11 + 6}{11} = \frac{105}{11}\]
\[3)\ 3\frac{9}{17} = \frac{3 \cdot 17 + 9}{17} = \frac{60}{17}\]
\[4)\ 12\frac{5}{6} = \frac{12 \cdot 6 + 5}{6} = \frac{77}{6}\]
\[5)\ 13\frac{49}{100} = \frac{13 \cdot 100 + 49}{100} =\]
\[= \frac{1349}{100}\]
\[6)\ 8\frac{3}{16} = \frac{8 \cdot 16 + 3}{16} = \frac{131}{16}\]
\[\boxed{\ \mathbf{774}.\ }\]
\[Сумма\ длин\ всех\ ребер:\]
\[7 \cdot 4 + 10 \cdot 4 + 11 \cdot 4 =\]
\[= 28 + 40 + 44 = 68 + 44 =\]
\[= 112\ см.\]
\[Площадь\ поверхности:\]
\[2 \cdot (7 \cdot 7 + 7 \cdot 11 + 10 \cdot 11) =\]
\[= 2 \cdot (49 + 77 + 110) =\]
\[= 2 \cdot (126 + 110) =\]
\[= 2 \cdot 236 = 472\ см^{2}.\]